Snatch block



April 17, 1945. MQQRE' JR 2,374,118

' SNATCH BLOCK Filed May 15, 1944 2 Sheets-Sheet l Inventor GBoVE/B 6'. 1700195, J8.

Ap 17 1945- 6. s; MOORE. JR 2,3 ,118

' SNATCH BLOCK Filed May 15, 1944 Y 2 Sheets-Sheet 2 Inventor Q y W I, u I

- Attorneys Patented Apr. 17, 1945 a; w r 2,374,118

.1 UNITED STATES Paras fastens kier-on IiLOQiF.-.. I Grover SI'Mo'ore, Jr.;'Houstoi1,' Tein.{

Application May 15, 1945815351 166; 555,61:

1 Claims. (01. 254-193) The present invention relates to new anduseis journaled. As illustrated to advantage in Fig- -ful improvements in snatch'blocks of the type ures 4 and 5 of the drawings, the crosshead comprising a side plate which may be swung 6 includes a block 1 in which a supportinghook to open position to facilitate the insertion or 8 is swivally mounted. Projecting in opposite diremoval of the rope or cable. 5 rections from the block I .are trunnions 9 and iii. '5 An important object of the invention is to The trunnion 9, which is circular in transverse provide a snatch block of the aforementioned section, is journaled in the opening 5 inthe plate character comprising novel latching means I and has formed thereon a retaining head il.

whereby the swingable side plate may be opened The trunnion H) is of an elongated, substantially I only when the supporting hook is in inoperative 10 segmental transverse section, aid trunnion havposition. ing flat opposite side portions l2. A circular ;Another important object of the invention is head I 3 is provided on the trunnion ID. to provide a snatch block comprising a latch- Extending into the upper portion of the plate in; means which will prevent spreading of the 2 from an edge I 4 thereof is a keyhole slot l5 side plates in the event of failure of the sheave for the reception of the trunnion l0. Fixed as Din an improved snatch block of the character set respectively. Extending into the plate I6 is a g by welding on the upper portion of the plate 2 I Other objects of the invention are to provide are intermediate and outer plates 5- and I1,

forth which will be comparatively simple in concomparatively large slot I8 with which the keystruction, strong, durable, compact and which hole slot I 5 registers. The slot l8 accommodates,

may be manufactured at low cost. the head l3 on the trunnion iii. The plate [1 .All of the foregoing and still further objects constitutes a cover forthe'slots l5 and I8.

and advantages of the invention will become ap- It is thought that the operation of the device parent from a study of the following specification, will be readily apparent from a consideration of taken in connection with the accompanying the foregoingn Briefly, withthe plate 2 in closed drawings wherein like characters of reference position, as seen in Figurel of the drawings, the

designate corresponding parts throughout the trunnion I0 is engaged in-the keyhole slot l5 several views, and wherein: and the head I3 is engaged in the slot l8. With Figure 1 is a view in side elevation ofa snatch the supporting hook 8 in vertical or operative block constructed in accordance with the present position, the transversely elongated trunnion l0 invention with a portion broken away to reveal is journaled in the enlarged, circular inner end the latching means. portion I! of the keyhole slot l5 at an angle Figure 2 is a view in front elevation of the to the relatively narrow neck or throat portion I device. 01' said keyhole slot. Thus, the trunnion Hi can- Figure 3 is a side elevational view, showing the 5 not enter the narrow portion of the keyhole slot snatch block open. I I 5 and it'will accordingly be seen that the swing- Figure 4 is a view in side elevation of the able sideplate 2 is po t vely locked in closed crosshead, showing a portion of the supporting position. The circular head. I3 is journaled'in hook mounted thereon. the rounded inner end portion 20 of the slot 18 Figure 5 is a detail view in transverse section, 40 and said head functions as a bearin for sisttaken substantially on the line 55 of Figure 4. ing in supporting-the pl te 2- F rth the head.

Figure 6 is a fragmentary view in section, taken i 3, being engaged with the outer side of the plate substantially on the line B--6 of Figure 3. 2 around the portion I9 of the keyhole slot. l5, Figure 7 is an elevational view of the swingprevents spreading, of the plates I and 2 should able plate, looking at the inner side thereof. 4 the sheave pin 3 break. An opening 2| in the Referring now to the drawings in detail, it will plate 2 a omm tes h pin T nh be seen. that the embodiment of the invention plate ,as seen inFisure 3 of. the drawings, the which has been illustrated comprises a pair of book 8 is swung-downwardly to inoperative posisubstantially oval side plates l and 2 of suittion'. In this! manner the transversely elongated able metal. Mounted on the plate I is a bolt 3 trunnion lis -positioned to enter the relatively on which the plate 2 is swingable. A sheave 4 narrow neck or throat portion of the keyhole is journalecl on the bolt 3 between the plates slot l5 and the-plate 2 may be readily swung land 2. open on the pin 3.

g The upper portion ofthe plate I has formed It is believed that the many advantages of a therein an opening 5 in which a crosshead 8 snatch block constructed in accordance with the present invention will be readily understood, and although a preferred embodiment of the device is as-illustrated and despribed, it is to be understood that changes in details of construction may be resorted to which will fall within the scope of the invention aselaimed.

What is claimed is:

A snatch block 0! the character described comprising a plate, a sheave pin mounted on said plate, a. sheave iournaled on said pin, a crosshead journaled on said-plate, a supporting hook mounted on said crossh'efad, a plate mounted for swinging movement on'the pin, intermediate and outer plates mounted on-the swingable plate, the

intermediate plate having a relatively wide slot extending from an edge thereof, the swingable plate having a keyhole slot in registry with the first-named not and extending mm said swineable plate from an edge thereof, the larger diameter 01 said keyhole slot being less than the width of said first-mentioned slot, the crosshead comprising a trunnion of transversely elongated,

being engaged with the outer face of the swingableplate. I

GROVER S. MOORE. JR. 

